Pretty good,
my advice is to make the scene order build up to dramatic climax, then calmer after scenes, kind of weird seeing the captain say "blow the tanks" in the calm harbor between two battle scenes.

lots of really good shots and effects you did, good music setting and captain orders.
Would make a good official show video: )

@Kitsugi: thank you very much, theme music is 50% of this video

It's great from the idea, music selection and implementation, it's fun to watch the story presented in an interesting way, bravo.

Eh, ma ne mancano ancora di onorificenze, Herr Kaleun!

Distintivo U boot in oro! Complimenti!